Song S, Si J, Zhang J, Cai G. Structure, tunable luminescence and energy transfer in Tb3+ and Eu3+ codoped Ba3InB9O18 phosphors.
RSC Adv 2019;
9:1029-1035. [PMID:
35517635 PMCID:
PMC9059530 DOI:
10.1039/c8ra09735f]
[Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 12/12/2018] [Indexed: 11/21/2022] Open
Abstract
The borate Ba3InB9O18 (BIBO) is a promising host material for phosphors. A series of Tb3+ and Eu3+ codoped Ba3InB9O18 phosphors were synthesized. Based on the Rietveld method, structure refinement of the codoped BIBO phosphor was carried out. Then, the luminescence properties of BIBO:Tb3+, Eu3+ phosphors were extensively investigated under ultraviolet (UV) and vacuum ultraviolet (VUV) excitation. The measured PL spectra and decay times evidenced that energy transfer occurs between the Tb3+ and Eu3+ ions. The energy-transfer mechanism from Tb3+ to Eu3+ in Ba3InB9O18 is dominated by electric multipolar interactions, with the critical distance calculated to be 10.97 Å. The temperature sensitivity of the Tb3+ and Eu3+ codoped sample under VUV was also investigated at the low temperature range from 25 K to 298 K. The emission color could be tuned from green to the red region by adjusting the concentration of codoped ions. The results indicate that the BIBO-based phosphors are valuable candidates for applications in the display and lighting fields.
The emission colors of Ba3InB9O18:Tb3+, Eu3+ can be adjusted from yellowish green to orange by tuning the content of Eu3+ ions due to the energy transfer from Tb3+ to Eu3+, thus showing a great potential for display and lighting fields applications.![]()
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